:root {
    --primary: #0f172a;
    --accent: #3b82f6;
    --accent-light: #60a5fa;
    --accent-glow: rgba(59, 130, 246, 0.15);
    --surface: #1e293b;
    --surface-light: #334155;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: rgba(148, 163, 184, 0.1);
    --gradient-start: #3b82f6;
    --gradient-end: #8b5cf6;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--primary);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 2rem;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 50%, rgba(139, 92, 246, 0.06) 0%, transparent 50%);
    animation: heroGlow 15s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(-5%, 3%) rotate(3deg); }
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(148, 163, 184, 0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(148, 163, 184, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    text-align: center;
}

.lang-switcher {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.7);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    transition: all 0.3s;
    z-index: 10;
}

.lang-switcher:hover {
    border-color: rgba(255, 255, 255, 0.6);
    color: #fff;
}

.hero-logo {
    margin-bottom: 2rem;
    display: flex;
    justify-content: center;
}

.hero-logo img {
    width: clamp(280px, 80vw, 800px);
    height: auto;
    filter: brightness(0) invert(1);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    background: var(--accent-glow);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--accent-light);
    margin-bottom: 2rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--text-muted);
    max-width: 700px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
}

.hero .hero-cta {
    display: none;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.25);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

section {
    padding: 6rem 2rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 700px;
    line-height: 1.8;
}

.about {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.stat-card {
    background: var(--primary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.75rem;
    text-align: center;
    transition: border-color 0.3s, transform 0.3s;
}

.stat-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    transform: translateY(-4px);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

#leistungen .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

#leistungen .services-header {
    grid-column: 1 / -1;
    text-align: center;
    margin-bottom: 4rem;
}

#leistungen .services-header .section-subtitle {
    margin: 0 auto;
}

.service-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2.5rem;
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    opacity: 0;
    transition: opacity 0.3s;
}

.service-card:hover {
    border-color: rgba(59, 130, 246, 0.2);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.service-card:hover::before {
    opacity: 1;
}

.service-header {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.service-icon {
    width: 56px;
    height: 56px;
    background: var(--accent-glow);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--accent);
    flex-shrink: 0;
}

.service-title {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.service-description {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 0.75rem;
}

.service-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    padding: 0.5rem 0;
}

.service-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    margin-top: 0.6rem;
    flex-shrink: 0;
}

.approach {
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.approach-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.approach-text p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.approach-pillars {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.pillar {
    background: var(--primary);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    transition: border-color 0.3s;
}

.pillar:hover {
    border-color: rgba(59, 130, 246, 0.3);
}

.pillar-icon {
    width: 44px;
    height: 44px;
    background: var(--accent-glow);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--accent);
    flex-shrink: 0;
    margin-block: auto;
}

.pillar-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.pillar-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.cta-section {
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-content .section-title {
    margin-bottom: 1.5rem;
}

.cta-content .section-subtitle {
    margin: 0 auto 2.5rem;
    text-wrap: pretty;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-muted);
}

footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-logo {
    height: 100px;
    margin-bottom: 0.75rem;
    filter: brightness(0) invert(1);
}

.footer-heading {
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 0;
    letter-spacing: -0.02em;
}

.footer-heading .footer-gradient {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-company {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0;
}

.contact-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
}

.footer-contact-link {
    color: inherit;
    text-decoration: none;
}

.footer-contact-link:hover {
    color: var(--accent);
}

.back-to-top {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #1e40af, #9333ea);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    transition: transform 0.3s;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.scroll-buttons {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    gap: 1rem;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s, visibility 0.3s;
}

.scroll-buttons.visible {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.back-to-top {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #1e40af, #9333ea);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 1.25rem;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    transition: transform 0.3s;
}

.mail-to-top {
    position: relative;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #1e40af, #9333ea);
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    transition: transform 0.3s, box-shadow 0.3s;
    text-decoration: none;
}

.mail-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.5);
}

.mail-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 900px) {
    .about-grid,
    .approach-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    #leistungen .container {
        grid-template-columns: 1fr;
    }
    .stats-grid { order: -1; }
    .service-list { grid-template-columns: 1fr; }
    .contact-info {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .scroll-buttons {
        bottom: 1.5rem;
        right: 1.5rem;
    }
    .scroll-buttons .back-to-top,
    .scroll-buttons .mail-to-top {
        width: 50px;
        height: 50px;
        font-size: 1.1rem;
    }
    section { padding: 4rem 1.25rem; }
    .service-card { padding: 1.75rem; }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    .stat-card { padding: 1.25rem; }
    .stat-number { font-size: 2rem; }
}